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2000.01.25 22:10 "(Re:) tiff2ps: G4 compression in PostScript", by Stanislav Brabec
2000.01.25 13:29 "libtiff: bugreport (many bugs)", by Stanislav Brabec
2000.01.25 15:42 "Re: libtiff: bugreport (many bugs)", by Chris Hanson
2000.01.25 16:17 "Re: libtiff: bugreport (many bugs)", by Michael L. Welles
2000.01.28 07:39 "Re: libtiff: bugreport (many bugs)", by Tom Lane
2000.01.26 00:20 "[Fwd: (Re:) tiff2ps: G4 compression in PostScript]", by Helge Blischke

2000.01.28 07:39 "Re: libtiff: bugreport (many bugs)", by Tom Lane

Stanislav Brabec <utx@k332.feld.cvut.cz> writes: > tiff2ps:

-- ditto for DCT/progressive. PostScript Language Reference Manual

   doesn't explicitly say anything about progressive DCT compressioin,
   but the compression isn't supported nor by Adobe nor Aladdin gs.
   So it needs either data re-encoding or at least warning message.

FYI, gs supports progressive JPEG if compiled with progressive-enabled libjpeg. That is not the default build but it only takes a one-line change to a config file to make it happen.

You are right that Adobe RIPs do not cope with p-JPEG, so it would probably be better if tiff2ps re-encoded progressive data to non progressive...

regards, tom lane

                        organizer, Independent JPEG Group